[ovirt-users] VM Deployment By Template
Shahar Havivi
shaharh at redhat.com
Thu Aug 28 06:49:24 UTC 2014
On 28.08.14 11:05, Punit Dambiwal wrote:
> Hi All,
>
> Please help me to solve this problem...or suggest me any workaround ??
>
> Thanks,
> Punit
>
>
> On Wed, Aug 27, 2014 at 8:01 PM, Karli Sjöberg <Karli.Sjoberg at slu.se> wrote:
>
> > On Wed, 2014-08-27 at 19:52 +0800, Punit Dambiwal wrote:
> > > Hi Itamar,
> > >
> > >
> > > It's the same as i used and discussed in last reply...create the VM
> > > with 1GB virtual template and expand the disk size after
> > > deployment...but the problem here is disk will expand or resize...but
> > > it will not make any changes in the existing partition table..that
> > > means after expand disk all the existing partition will remain
> > > same....then you need to manual login in to server and make the
> > > changes with the help of fdisk and lvm commands..
> > >
> > >
> > > I am looking for the way we can resize the disk...and at the same time
> > > when the disk will expand...it should be resize the partition table...
> >
> > I think this is what you were after:
> > "QEMU-GA
> >
> > support for notifying the guest and updating the size of the visible
> > disk: To be integrated "
> >
> > So maybe you could post an RFE on that for "qemu-ga"? Help testing?
> >
> > /K
> >
> > >
> > >
> > > Is the cloud-init...custom script can do this or not ??
You may be able to do that with cloud-init custom-script section,
The following link will show you how to add a file to the client, you may write a code
that change the partition table, you need to make the file executable and put
it in a init section (such as /etc/init.d sections), the only problem is that
it may be too late since cloud-init may be loaded after that phase... (so
maybe other place...)
http://cloudinit.readthedocs.org/en/latest/topics/examples.html#writing-out-arbitrary-files
Another option is to set a command under this section:
http://cloudinit.readthedocs.org/en/latest/topics/examples.html#run-commands-on-first-boot
Shahar.
> > >
> > >
> > > Thanks,
> > > Punit
> > >
> > >
> > > On Wed, Aug 27, 2014 at 6:11 PM, Itamar Heim <iheim at redhat.com> wrote:
> > > On 08/27/2014 12:47 PM, Punit Dambiwal wrote:
> > >
> > > Hi Itamar,
> > >
> > > To edit the disk size are you referring this "Another
> > > way i got is
> > > create the VM with 1GB virtual template and expand the
> > > disk size after
> > > deployment...but the problem here is disk will
> > > expand...but it will not
> > > done any changes in the existing partition table..that
> > > means after
> > > expand disk you need to manual login in to server and
> > > make the changes
> > > with the help of fdisk and lvm commands..."
> > >
> > > Or it's different then the upper one...please let me
> > > know how to perform
> > > this...if any screen shot you can provide for better
> > > understanding..
> > >
> > >
> > > http://www.ovirt.org/Features/Online_Virtual_Drive_Resize
> > > adding derez for follow up questions
> > >
> > >
> > > Thanks,
> > > Punit
> > >
> > >
> > > On Wed, Aug 27, 2014 at 5:15 PM, Itamar Heim
> > > <iheim at redhat.com
> > >
> > > <mailto:iheim at redhat.com>> wrote:
> > >
> > > On 08/27/2014 12:08 PM, Punit Dambiwal wrote:
> > >
> > > Hi Itamar,
> > >
> > > Thanks for the update....Yes.. i want to
> > > create different size
> > > VM with
> > > the same OS template...
> > >
> > > ------------
> > > 3. we support "disk resize" since 3.4 (iirc),
> > > which you can do
> > > post VM
> > > provisioning.
> > >
> > > considering #3, then #1 should be easy to
> > > support as well these
> > > days.
> > > please open an RFE.
> > > ------------
> > >
> > > Could you please more elaborate point number
> > > 3...how to use
> > > it..i will
> > > go with this one ...
> > >
> > >
> > > iirc, you just need to edit the disk size when vm
> > > is down or up (for
> > > up, only for specific disk interfaces, virtio-blk,
> > > not ide, iirc)
> > >
> > > Thanks,
> > > Punit
> > >
> > >
> > > On Wed, Aug 27, 2014 at 4:37 PM, Itamar Heim
> > > <iheim at redhat.com
> > > <mailto:iheim at redhat.com>
> > >
> > > <mailto:iheim at redhat.com
> > > <mailto:iheim at redhat.com>>> wrote:
> > >
> > > On 08/27/2014 04:18 AM, Punit Dambiwal
> > > wrote:
> > >
> > > Hi Michal,
> > >
> > > I want to deploy the VM with the
> > > template but the
> > > problem is in
> > > ovirt
> > > when you deploy the VM by template it
> > > copy the whole
> > > image(even
> > > thin or
> > > thick disk)...like if i have 40GB
> > > virtual size (actual
> > > size 1GB)
> > > disk....it will copy the whole 40GB
> > > to provision the
> > > virtual
> > > machine....so if i want to deploy 10
> > > VM simultaneous
> > > then it
> > > will copy
> > > 4TB data and take long time to
> > > provision....
> > >
> > > I want the way i can make the
> > > template with small
> > > size....and once i
> > > choose to create the virtual machine
> > > with 40GB...the VM
> > > deploy
> > > with the
> > > small template on the 40GB disk... is
> > > it possible with
> > > ovirt.. ??
> > >
> > >
> > > so you want to provision a VM with a
> > > different disk size
> > > than template.
> > > good point. some thoughts:
> > > 1. for thinly provisioned (qcow2) - its
> > > COW, hence the same
> > > size.
> > > 2. for clone - actually, no reason
> > > shouldn't be supported
> > > easily.
> > > 3. we support "disk resize" since 3.4
> > > (iirc), which you can
> > > do post
> > > VM provisioning.
> > >
> > > considering #3, then #1 should be easy to
> > > support as well these
> > > days. please open an RFE.
> > >
> > >
> > > Thanks,
> > > Punit
> > >
> > >
> > > On Tue, Aug 26, 2014 at 9:01 PM,
> > > Michal Skrivanek
> > > <michal.skrivanek at redhat.com
> > > <mailto:michal.skrivanek at redhat.com>
> > > <mailto:michal.skrivanek at __redhat.com
> > > <mailto:michal.skrivanek at redhat.com>>
> > >
> > > <mailto:michal.skrivanek@
> > > <mailto:michal.skrivanek@>__red__hat.com
> > > <http://redhat.com>
> > >
> > >
> > > <mailto:michal.skrivanek at __redhat.com
> > > <mailto:michal.skrivanek at redhat.com>>>> wrote:
> > >
> > >
> > > On Aug 26, 2014, at 12:01 ,
> > > Punit Dambiwal
> > > <hypunit at gmail.com
> > > <mailto:hypunit at gmail.com>
> > > <mailto:hypunit at gmail.com
> > > <mailto:hypunit at gmail.com>>
> > > <mailto:hypunit at gmail.com
> > > <mailto:hypunit at gmail.com>
> > > <mailto:hypunit at gmail.com
> > > <mailto:hypunit at gmail.com>>>> wrote:
> > >
> > > > Hi Michal,
> > > >
> > > > 2. I find disk size can not
> > > modify at the time
> > > of VM
> > > provisioning,is there any way to
> > > modify the VM
> > > disk size ??
> > > >
> > > > well, not really, AFAIK.
> > > > create another disk, move
> > > your data, remove the
> > > original Or
> > > create a bigger thin provisioned
> > > disk at the
> > > beginning...
> > > >
> > > > I didn't understand the
> > > mean...i can create the
> > > another
> > > disk...it's ok...but how to move
> > > the data from the
> > > existing
> > > disk to
> > > new disk at the time of the VM
> > > deployment... ?? is
> > > there
> > > any way to
> > > move the data.. ??
> > > Hi,
> > >
> > > You would have to do that inside
> > > the guest…the
> > > same way as
> > > you would
> > > do it on real hardware…mount
> > > both disks, move the
> > > relevant data
> > > not trivial and not automated
> > >
> > > >
> > > > Another question is there any
> > > way to mount the
> > > img like
> > > i will
> > > create the VM with blank
> > > template with my
> > > preferred disk
> > > size and
> > > leter on install the OS through
> > > any OS template
> > > ??? i know
> > > i can
> > > install the OS through CD-ISO
> > > but i don't want the
> > > manual
> > > installation…
> > >
> > > so you want to have a
> > > preinstalled OS…so how did
> > > you want
> > > to use it?
> > > I probably don't understand what
> > > are you trying to
> > > achieve.
> > > Anything else than having a
> > > Template with OS and
> > > you deploy
> > > VMs from
> > > that….you need to change disk
> > > sizes for each such
> > > VM? Could
> > > it be
> > > done by adding an additional
> > > disk?
> > >
> > > Thanks,
> > > michal
> > >
> > > >
> > > > Thanks,
> > > > Punit
> > > >
> > > >
> > > > On Tue, Aug 26, 2014 at 5:51
> > > PM, Michal Skrivanek
> > > <michal.skrivanek at redhat.com
> > > <mailto:michal.skrivanek at redhat.com>
> > > <mailto:michal.skrivanek at __redhat.com
> > > <mailto:michal.skrivanek at redhat.com>>
> > >
> > > <mailto:michal.skrivanek@
> > > <mailto:michal.skrivanek@>__red__hat.com
> > > <http://redhat.com>
> > >
> > >
> > > <mailto:michal.skrivanek at __redhat.com
> > > <mailto:michal.skrivanek at redhat.com>>>>
> > >
> > > wrote:
> > > >
> > > > On Aug 26, 2014, at 05:26 ,
> > > Punit Dambiwal
> > > <hypunit at gmail.com
> > > <mailto:hypunit at gmail.com>
> > > <mailto:hypunit at gmail.com
> > > <mailto:hypunit at gmail.com>>
> > >
> > > <mailto:hypunit at gmail.com
> > > <mailto:hypunit at gmail.com>
> > > <mailto:hypunit at gmail.com
> > >
> > > <mailto:hypunit at gmail.com>>>> wrote:
> > > >
> > > > > Hi All,
> > > > >
> > > > > I have some questions
> > > regarding the VM deployment
> > > through OS
> > > template...
> > > > >
> > > > > 1. I have imported centos
> > > template from openstack
> > > glance (the
> > > actual size of the template is
> > > 16GB but used is
> > > 1GB)...now my
> > > question is if i deploy the new
> > > VM with this
> > > template,the
> > > process
> > > will copy the whole 16GB or just
> > > 1 GB to create
> > > the new VM ??
> > > >
> > > > if you deploy with thin
> > > provisioned disks it
> > > should be 1GB
> > > >
> > > > >
> > > > > 2. I find disk size can not
> > > modify at the
> > > time of VM
> > > provisioning,is there any way to
> > > modify the VM
> > > disk size ??
> > > >
> > > > well, not really, AFAIK.
> > > > create another disk, move
> > > your data, remove the
> > > original.
> > > > Or create a bigger thin
> > > provisioned disk at the
> > > beginning
> > > >
> > > > >
> > > > > Thanks,
> > > > > Punit
> > > > >
> > > > >
> > > > > On Mon, Aug 25, 2014 at
> > > 5:42 PM, Punit Dambiwal
> > > <hypunit at gmail.com
> > > <mailto:hypunit at gmail.com>
> > > <mailto:hypunit at gmail.com
> > > <mailto:hypunit at gmail.com>>
> > >
> > > <mailto:hypunit at gmail.com
> > > <mailto:hypunit at gmail.com>
> > >
> > > <mailto:hypunit at gmail.com
> > > <mailto:hypunit at gmail.com>>>> wrote:
> > > > > Hi All,
> > > > >
> > > > > I have some questions
> > > regarding the VM deployment
> > > through OS
> > > template...
> > > > >
> > > > > 1. I have imported centos
> > > template from openstack
> > > glance (the
> > > actual size of the template is
> > > 16GB but used is
> > > 1GB)...now my
> > > question is if i deploy the new
> > > VM with this
> > > template,the
> > > process
> > > will copy the whole 16GB or just
> > > 1 GB to create
> > > the new VM ??
> > > > >
> > > > > 2. I find disk size can not
> > > modify at the
> > > time of VM
> > > provisioning,is there any way to
> > > modify the VM
> > > disk size ??
> > > > >
> > > > > Thanks,
> > > > > Punit
> > > > >
> > > >
> > > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
> >
> > --
> >
> > Med Vänliga Hälsningar
> >
> >
> > -------------------------------------------------------------------------------
> > Karli Sjöberg
> > Swedish University of Agricultural Sciences Box 7079 (Visiting Address
> > Kronåsvägen 8)
> > S-750 07 Uppsala, Sweden
> > Phone: +46-(0)18-67 15 66
> > karli.sjoberg at slu.se
> >
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